/Engine/Source/Runtime/Engine/Classes/Kismet/KismetTextLibrary.h
Converts a passed in date & time to a text, formatted as a date & time using an invariant timezone. This will use the given date & time as-is, so it's assumed to already be in the correct timezone.
static [FText](API\Runtime\Core\Internationalization\FText) AsDateTime_DateTime ( const [FDateTime](API\Runtime\Core\Misc\FDateTime) & In )